Tig Welding Rod AWS Classification ER309Si ER309LSi Material Stainless Steel Process TIG Welding (GTAW) Overall Diameter 0.045 in Overall Length 36 in Tensile Strength (As Welded) 87 ksi Yield Strength (Minimum Required) 64 ksi Yield Strength (As Welded) 64 ksi Series ER309LSi Weight 1 lb For Material Type Stainless Steel to Stainless Steel Stainless Steel to Carbon Steel Stainless Steel to Low-Alloy Steel For Material Grade 309S Welding Current Designation DCEN